Improvement in gas-regulators



JOHN D. AVERELL, OFNEW Yoan, N. Y., AssreNoR To JOHN oF SAME PLACE.

o. scHooLnY,

IMPROVEMENT IN GAs-REeuLAToRs.

Specification forming part of Letters patent No. 179,467, dated July 4, 1876 application tiled- June 7, 1876. v

To all whom it may concern:

Be it known that I, JOHN D. AVERELL, of

ing drawings and letters of reference marked thereon.

The class of gas-governors herein relatedto is of the kind in which the regulating-valve is operated by the-pressure of gas under large and small inverted cups attached directly to the rod ot' said valve, and in which said cups have their bottom edges sealed by mercurycontained in the mercury-chamber, in an annular groove for each cup, and in which the valve-seat is located under the mercury-chamber, between the inlet and outlet of the gas, and the inlet connected with the small cup and the outlet connected with the larger of said cups.

The object of this invention is to provide the chamber which has the gas-outlet with an automatic discharge for the condensation of the gas accumulating in said chamber back into the inlet of the governor, instead ofthe removable screw-plug now used for drawing oli' said condensation in the bottom of said chamber from time to time by the user oi' the governor, so that by these means nearly all attention for the proper operation of the governor is dispensed with after it is once properly set in operation.

The drawing annexed represents a vertical central longitudinal section of the governor with my improvements.

A represents the governor-case. Its upper portion has the mercury-chamber B, which. is.

covered by the cap C, in the center of which the valve-rod D is guided. The lower portion ot' the case has the dischargechamber E ,fthe inlet-chamber F, and the valve-seat G between said chambers. 'lhe discharge-chamber has the upward outlet H, and the inlet-chamber the downward-inlet-openingl, and both of said openings are each provided with a pipe union coupling, to connect the inlet with the gaslneter outlet, and the governor-outlet with the gas-pipe leading from the meter to the users burners. J represents the regulating-valve,

which is secured under the valve-seat to the valve-rod D, and to the upper portion of the same rod are attached, upon one another, the inverted cups K and L, between theshoulder M and the nut EN on said rod. The bottom ot' the mercury-chamber is formed with a hollow annular upward projection, O, between tho -rim of the large cup K and the rim of the small cup L, to displace a large amount of mercury between said rims, and save the expense for the same. Said bottom has also an upward circular rim cast to it, between the rim ol the small cup L and the valve-rod D; and it has a central opening, P, through which the gas passes-from the inlet-chamber, around the rod D, into thespace under the small inverted cup L. The hollow rim Ollas also asmall opening, Q,through which the gas passes into the space under the large inverted cup K from the discharge-chamber E. Said bottom ot' the mercury cham ber heretofore has been formed straight across, and, to displace the larger part of the mercury between the rims ot' said cups, a separately cast rim was employed, which was secured with screws to said bottom. By means ot' forming and Vcasting said bottom with the hollow rim O, less metal is required, and the expense for separately securing said rim is avoided. The bottom ofthe dischargechamber E is cast with a downward hub, R, located centrally under the valve J. Said hub unites with the hub of theinlet-opening I, andthe hub R has a threaded large opening, into which a large plug, S, is fitted. The threaded opening of said hub R Ahas a circular groove,

.'l, from which an opening is made into the inlet-opening I. rlhe plug S has also a central threaded opening, in which a secondary small plug, U, is iitted. The upper part of said opening in the plug S is contracted and formed with a valve-seat, V, in which a small valve, W, is employed, having its rod X guided in a cen; tral opening made in said small plugU for the purpose. By means ot' a small spiral spring employed under the valve W the same is nearly balanced and held loosely to its seat. A small space is left between the top end of the plug U and the bottom side of the valve W', and from said space is made a small opening, Y, into the groove T, so that by these means,

While the pressure in the inlet I is greater than that in the discharge-chamber E, which is the case while the gas is used and passing through, said valy'eWis caused to be and remain closed; but as soon as the gas is stopped or not used, the pressure in both the discharge-chamber and inlet becomes equal, and, by the aid of the Weight of the fluid or the condensation ofthe gas accumulated in the discharge-chamber E, said Valve is caused to open and allow said condensation to pass down through the valveopening into the space between said valve and the top of the plug U, and from there, through Jthe opening Y, into the groove T, and from if 

